Re: School
term

: : : : In May of the fourth quarter, I
decided to plan something special for the children: a Mother's Day tea.

: :
: : what is fourth quarter.

: : : I think it means this: In business and some
other areas, a year is often divided up into quarters consisting of three months
each. a company's earnings might be reported quarterly, for instance. Your sentence
is unusual though because May is usually considered to be in the second quarter.
More context might help to explain why.

: :
: : You're thinking business.
It could refer to the fourth quarter of the moon - that time of the month when
the half-moon wanes to become a "new" moon. Since the moon takes roughly one month
to come full circle (so to speak), every month of the year could have a fourth
quarter. Of course, one can't be absolutely certain this is the intended reference
unless one knows the precise context.

: Since it refers to children, I would
think quarter means "a school term of about 12 weeks" (Merriam-Webster online).

I
didn't know there were four school terms in the US? Nonetheless, if a school year
is set to start in August, then the month of May would fall in the 4th quarter
of the academic year, so this suggestion looks spot on.

I'm groping in the dark
here, since in the UK we more usually have three terms in a year (or trimesters,
if you like).